Liquid dispenser



Aug. 28, 1928.

T. M. MANSON ET Al.

LIQUID DI SPENSER Fiied Feb. 5, 1927 Patented Aug. 28, 1928.

UNITED STATES PATENT O HqnAs vrgnensen-ene (immense. W RD, or moeomonmmq; CANADA, Aswsrenenswoemae vision PUMPCOMPANY, LIMITED, or "rononro, CANADA.

1 en; i DISPENSER. I

1 Application filed February 3, 1927. ;Seria1 No. 165,5 98.

i The principal objectsptthe invention ere,

to simplify the construction andito etfecta terial reduction in the:cost, and taprov'idea device which willbe very simple and easy tooperate and which will effectively protect the customer against fraudand dishonesty on the parto-t theoperator. 1

A:ftl1'fil16l important ohj ect. is toenable the or accurate adju-strnent act the overflow to determine the proper level of "the liquidat the top measuring graduation. y

The principal features ofthe invent-ion consist in reflecting a;siphonic draining of the liquid-from a measuringhowl hack to the sup-:ply and in the novel eoiretructionand arrange ment of parts, wherebythe siphonic action is manually controlled, and whereby the drain pipefor regulating; the i'naxinium height of the liquid in the measuringhowlmaybe nocurately adjusted to register: with the scale graduatious on thebowl; 4 r

In the drawings, Figure 1 1s a longitudinal vertical sectional view of aliquiddispenser constructed in accordance witlrthis invention.

Figure 2 is an enlarged longitudinal midsectional viewof the siphonovertlowqand'air release. 1

Figure? is an enlargedsectional-perspective detailfot the upper end ofthe overflow siphon and siphon operating valve. 1 r 1 In thevisihleitypeof liquiddispensers itis customary to arrange somegtorni of.deviceifor draining the liquid t'roin the measuringv howl when businessissuspendedpin Ifact, this is a very rigid requirement ofinsurencelconditions. i i a In the pumps at'ipresent on the ,market the drainingof the bowl is efiectedhy the opening of a valve which requiresconsiderable equipmentwhich is dispensedwith inlthe present device. v vs In the construction herein shown, the standard casing 1 is of theusual tapered forln carrying a: cast metal cap 2 upon which is mountedthe glass 111easuring=hoWl 3.

The upper end ofthemea-suring howliis sealedhy acap 4. Q I

The cap 2 is preferably cast withfa pocket 5 therein arranged ofii'centre and extending downwardly from said pocket is the drain pipe 6which leadshack to the liquidsupply reservoir. 1

Ofiset from the drain pipe and in the upper side of the cap 2 isarranged an orifice Tin which is secured apacking gland 8, I t

i A tube 9 extends upwardlyfroin said packing glQHdflHdIEOI'HlStheoverflomthe top end 10f whichis arranged level with the maximum gaugeHIZII'kSOH the bowl. v r Mounted on the upper end o r the tube '9 andsupported thereabove'bylthe lugs 10 is a valve casing ll which isprovided with a lateral'annular flangepfii and to this flange is secureda tube. 13 which isot'iconsiderahly greater diameter 1 than the tube 19.and extends down-' wardly to a POlHlZiJClOSB'lIO thetopiofthe peekingrgland 8. s v p i The tubellgflogetlierwith the valve casing 11 whichfisclosedontopttorm's arhowl or chamber landthe tuber?) arranged within thetube v13 being spaced below the flange 12 by thelugs 1Oforinsasiphontuhe sothat it a column of liquid is elevated within thetube tooverflow into the tube 9, a siphonic action is producech whichresults in the draining of thebowl through the sipho'ni The dipper captis sealedin an airtight.

joint on the top of the bowl 3 as mentioned and an airvalve ltisarranged in thetop of said "cap; said air {valve having en orifice15leading to a plunger chamber 16 "from the iinteriorofth'e bowl and aplungerlf seats in a tapered seat 18 leading to the eirinlet openinglt).In theno'rmal action of the bowl in measuring liquids the liquid isdrewnas through "the dispensing tuheQO and airflowsfinto the bewl 3 throughthe inlet o ening 19 pastthe plungerfl .but i-li aninternelpressureis"created within the bowl, the pressure autoi'natically closes the{plunger 17 againstits i A eatery vaive ei arranged withinthe vali'eeasing 11 arranged at theytopof the siphoutuhe. This valve is offervery simple type having a peripheralopening 22 which 1 upon the rotationof the valve maybe brought into, or info ed ou'tiof register with theopening 23 in the sidewall ofthecasing 1'1. v

The top plate 24 which secures the valve 21 within the casing isprovided with a quadrantal slotQTj injw iicli apin'QG secured to thevalve isedapted to travel. This pin and slot form a positivelimitetionior rotation of the valve. The valve Qlis open etthe bottomend and (ill through a slot 31 in the casing The operator of the pump bymanipulating valve 21. WVhen said valve is closed and liquid is thelever may opener-close the pumped into the bowl through the supply pipe32 leadingfrom the pump 33 a pressure 7- of; air is created in the bowlautomatically closing the plunger valve 17, consequently the pressurebetween the cap 4 and the top of the liquidin the bowl forcesthediquidup inside ofthe tube 13 around the tube 9, until the liquidioverflmvsthetopof the tube 9.

YA: siphon isinstantly created by this action and the rcmainingcontents:of the bowl will be "carried up the 'tube 13 and discharged through thetube 9, thepocket-Ei and the drain pipe; 6 leadingtherefrom back to thesupply reservoir.

In the ordinary. operation of the 1 pump th'eivalve 21 reinainsopen withthe opening on y necessary or lower thetube 9 .w

lower packing p t, The construction ofthe apparatus isgreatduced to 22in the valve oppositethe opening 23in the I valve casing, consequentlythevolun'i'e of air in the bowl will simply flow through the valve downinto the overflow tubeas the bowl is Theairivalve ii audws the ingressof air to the bowl' to prevent an iretardingof the Iii uid; through ithe ordi It will beunderstood from, this-descripnary dispensing tionuthat a single overflow tubewithoutfany valvemechanism to be fitted thereinextends between the bowl and the connection to the reservoir. t i

The siphon equipmentis ver is readily assembled in the bow eratesverysimply. V In order to} adjust simple. It top and up it he overflow tubea is secured-to-the top ofthe plate, 24. V I e p1ate34isprpvided withaI'QCQ Qd P ing in which ishousedtha'head 36 ofa screw spindle 37 Thespi dle e ten s s wardly through and is threaded in the packgland 38 thetop cap. It is therefore hich slides treely in the gland .8. Y

ly simplified, Z, 'Ifhenumber ofparts are rethe m nimumand as thedispensing of; the drainjvalve eliminatesthe necessity of doors, locks:and other forms of apparatus necessary whereany mechanism wlthin thestandard requires tobe available of access.

. With theconstructionlof device described the operator maydrain thecontents of the bowlhack to the supply; reservoir, irrespecto rotate thespindle to raise tive of the level of liquid in the bowl, by simplyclosing the valve 21 and forcing a small quantity of liquid into thebowl. This creates a pressure and raises the liquid in the siphon tubeto start the siphonic action.

What we claim as our invention is a 1. a A liquid dispenser, comprisinga. sealed measuring chamber having a liquid inlet and an overflow tube,a tube open at the bottom extending over said overflow and enclosing thetop thereoflsaid tubes communicating at their upper ends, a valve in thetop of :said enclosingtubeto admit airthereto from the top of thechamberor exclude the passage ofair therethrough, and an air valve in the topofsaid chamber adapted to allow the ingress of air but to exclude egressof air therethrouh. w

2. 1i uid dispenser, comprisingameasuror having aninlet pipe extendingupwardly from the bottom, an overflow tube extending through the bottomof" said chamber and having an open upper end, a pipe connected withthelower end of said overflow tube 9 adapted to conduct the overflowtherefrom, a tube suspended oversaid overflow tube being open at'thebottom and having aextension tube within the chamber, said outer i tubeand extension beingcon'nected belowsaid valve and-means extending beyondthe chamher for controlling said valve v I Aliquid dispenser, comprisinga 1neasuringcasing, a drain tubezleading from thebota a,

tom of said casing to conduct the overflow therefrom, an overflow tubeextending, upwardly 'from said conducting tube-into said casing andvertically adjustable therein, said overflow {tube beingopentat theupper end, adjustable means for supporting said overflow tube fromitsupper end, a tube extendiing downwardly over the open end of theoverflow tube, and having-its upper end connected with the open upperendof the overflow tube, a valve arranged at the up er 'end of the outertube, and means for opening and closing said valve. ,1 a a 5. A liquiddispenser, comprisinga tubular standard, a sealed measuring chamberarsaid sealed chamber and slidably extending iii through the bottomthereof, a pipeleading from the bottom of said overflow tube, a tubeextending over the open end of said overflow tube and connected at itsupper end to the interior of the overflow tube said latter tube having avalve closing thetop thereof to admit air thereto or exclude airtherefrom, a feed pipe leading into said chamber, a discharge pipeleading from the bottom of said chamber, and an air valve arranged inthe top of said. chamber.

6. A liquid dispenser, comprising a tubular standard, a cap arrangedonthe top oi said tubular standard having a pocket therein,

a drain pipe leading from said pocket, a

bowl, said tubes communicating at their upper ends, a valve arranged atthe upper end of the latter tube, a spindle operating said valveextending down through the overflow tube and through said pocket. and alever secured to said spindle and extending outwardly through thetubular standard.

7. A. liquid dispenser, comprising a tubular standard, a sealedmeasuring bowl. supported on said standard, a drain pipe conneoted withthe bottom of saidbowl, an overflow pipe leading to said drain pipe,valve casing having downwardly depending lugs secured to said overflowpipe, a tube secured to said valve casing and spaced from said overflowpipe and extending downwardly thereover and enclosing the upper endthereot' and being open at the lower end, saidoverflow pipe and tubecommunicating at their upper ends, a rotary valve enclosed with in saidcasing having an openingin the side wall, an opening in the side wall ofthe casing adapted to register with theopening in said valve, a spindleconnected with said valve extending beyond the sealed casing, means forrotating said spindle, means for raising and lowering said overflowtube, an air valve in the top of said sealed casing, an inlet open inginto said sealed casing, and a discharge leading from the bottom of saidsealed casing. a i a 8. A liquid dispenser, comprising a base, a tubularstandard mounted on said base, a sealed measuring chamber mounted onsaid standard, a fluid pumparranged on the base, a feed pipe leadingfrom the fluid pump into said sealed chamber, a discharge pipe leadf ingfrom the bottom of the sealed chamber.

a drain pipe leading from the bottom of said.

sealed chamber, an overflow pipe connected with said dram pipe andextending upwardly into said chamber,.a tube extending over the open endof said overflow pipe, and havingits upper end connected withthe upperend of said overflow pipe, a valve arranged a in the upper end of thelatter tube, means extending beyond the sealed chamber for operatingsaid valve, and an air inlet valve ar ranged in the'top of said chamber.

9. In a liquid dispenser, the combination with a measuring chamber. andan overflow.

of means for temporarily closing the overflow entrance, and meansconnecting the chamber with said overflow and adapted to form therewitha. siphon to withdraw the liquid from the chamber when the overflowentrance is closed.

10. In a liquid dispenser, the combination 'witha measuring chamber andan overflow tube arranged therein, of a tube encircling the upper end ofthe overflow tube, said tubes communicating at their upper ends andadapted upon the closing of the overflow en-- trance to form. a siphonto empty the measuring bowl, and means for temporarily closing theentrance to said overflow tube to com plete the siphon. a

11. In a liquid dispenser, the combination with a measuring chamber andan overflow tube arranged therein, of a tube encircling the end of saidoverflow tube within the chamber, said tubes communicating at theirupper ends and being adapted upon the closing of the entrance to saidoverflow tube to form a siphon to emptylthe contents of the measuringchamber, a valve arranged in the entrance to the overflow tube andadapted to close the same against the egress of air from the measurlngchamber and complete the siphon, said valve being adapted when opened toallow air to escape from said chamber, and means for opening and closingsaid valve.

12. In a liquid dispenser, the combination with a measuring chamber, asupply, and an overflowleading from the upperend of the measuringchamber and connectedwith the supply, of means connecting said overflowwith the lower end ofthe measuring chamber and forming with saidoverflow a siphon.

for siphoning the liquidiirom. said measuring chamber to return it tothe supply.

13. In a liquid dispenser, the combination with a supply tank, ameasuringchamber, a

and a return pipe from saidmeasuring chamber leadlng to said supply tankand normally receiving the overflow from said chamber, of

auxiliary means connected. with said over-' flow and forming therewith asiphon for siphoning the contents of the measuring chamber through saidreturn. pipe to the supply tank.

THOMAS M. Manson. CHARLES H. WARD.

